A race for Green Bay mayor is among several contests on the ballot Tuesday for primaries to narrow the field heading into the April elections.

Polls are open from 7 a.m. to 8 p.m. for contests that include Sturgeon Bay City Council, Algoma School Board and more.

In Green Bay, voters will choose from three candidates running for mayor: incumbent Jim Schmitt and challengers Tom DeWane and David VanderLeest.

The top two vote-getters will advance to the April 7 election for mayor.

The city has more than 50,000 registered voters and 38 polling places that will be open Tuesday.

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Election officials test voting machines in 2015 for the city of Green Bay before Tuesday’s primary balloting.(Photo: File/USA TODAY NETWORK-Wisconsin)

In other races elsewhere:

BROWN COUNTY

Voters in Pittsfield will be casting ballots in a town supervisor contest featuring incumbent Ray Tauscher and challengers Brandon Holewinski and David Niespodzany. The top two finishers advance.

In a race that also includes part of Kewaunee County, Denmark School Board voters will be making two choices from among five contenders for School Board: incumbent Nancy VanElzen and challengers Regina Kramer, Scot Knutson, Walter Neta and Derek Rosek. Four candidates will advance to fill two board seats in April.

OCONTO COUNTY

Five candidates are on the ballot in Oconto for two seats on the Oconto City Council. The council is downsizing from 10 members to six. All five candidates are incumbents: Connie Bickel, Jean Feldt, Joseph Stiloski, Sheri Groll and Robert LeBreck. The top four finishers will advance.

In Gillett, voters will find three candidates vying for a seat on the City Council: incumbent Jeff Warrichaiet and challengers Joshua McCarthy and William Pecha. The top two vote-getters will advance.

Voters in the town of Townsend will select two choices for town supervisors from among five candidates: Carla Van Camp, Susan Rapp, Mike Lavin, Michael Grobe and Joanne Jones. Van Camp and Jones are incumbents. The top four finishers will advance.

In the Wabeno School District, three candidates hope to advance in a race for a School Board seat: Jim Adamczyk, Timothy Warrner, Joan Sackett and Mike Rocole. Incumbent Allan Gardebrecht is not running. The top two finishers will advance.

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File(Photo: Press-Gazette Media)

DOOR COUNTY

In Sturgeon Bay, voters will narrow the field in a race for City Council. District 1 incumbent Dan Wiegand is running in a field that also includes challengers Gerald Pelrine and Kelly Catarozoli. The two leading vote-getters will advance.

KEWAUNEE COUNTY

Voters in the town of Red River will choose from among three candidates for town treasurer: Adam Kinnard, Lana Vandervest and Ken Bouchonville. Incumbent Chuck Wagner is not running for re-election. The two top finishers will advance.

In the Algoma School District, incumbent School Board member Anne Clare Schmitz is running against challengers Jeremy Paszzak and Eric Pieschek. The two top vote-getters will advance.

SHAWANO COUNTY

In the race for Bonduel village president, incumbent Melvin Wendland is running against challengers Grant Staszak and Sharon Wussow. The top two vote-getters will meet in April.

The race for Bowler village treasurer has attracted three candidates: incumbent Colleen Cortwright and challengers Jessica Paiser DuFour and Kerry Breitrick. The top two finishers will advance.